Final answer:
The small object in the Orion Nebula that is bright in infrared but not visible could be a young star or a brown dwarf.
Step-by-step explanation:
The small object in the Orion Nebula that shows up very bright in infrared but is not seen in visible light because it is buried in dense gas and dust could be a young, newly formed star or a brown dwarf.
The gas and dust in the Orion Nebula can block visible light, making it difficult to see objects within it. However, infrared radiation can penetrate dust more easily, allowing us to detect the object in infrared.
This phenomenon is due to the different wavelengths of light. Infrared light has a longer wavelength than visible light, which enables it to pass through dust particles better.